Abnormal Noise Of Engine And Color Of Exhaust Smoke; Abnormal Noise Of Engine; Color Of Exhaust Smoke - Isuzu 4LE2 Owner's Manual

3-6
HANDLING OF ENGINE

Abnormal Noise of Engine and Color of Exhaust Smoke

CAUTION
• Immediately after the engine is started, the engine sound is louder compared
to the sound after the engine is warmed up, and also the color of the
exhaust smoke becomes more whitened or more blackened than the smoke
discharged during the normal operation. The engine sound and the color of
the exhaust smoke turn to normal after the engine is warmed up.
• If an abnormality is found in the engine sound or the color of exhaust smoke,
immediately contact an Isuzu Distributor.

Abnormal Noise of Engine

• Listen to the engine sound carefully, and if an abnormal noise is heard, check
the engine and identify the possible cause.

Color of Exhaust Smoke

• Check the combustion state of the fuel by observing the color of the exhaust
smoke. Also, inspect the exhaust pipe for leakage.
After the engine is warmed up, the color of the exhaust smoke becomes as
follows without any load applied.
Color of exhaust smoke
Colorless or light blue
ADVICE
• When the engine is started in a low temperature, moisture vapor may be
generated temporarily, but this is not a failure.
IDE-6450A_4500781_ALL.indd 3-6 IDE-6450A_4500781_ALL.indd 3-6
Black
White
Combustion state of engine
Normal
Abnormal
Abnormal
2014/04/18 14:19:54 2014/04/18 14:19:54